Results 51 to 60 of about 18,545 (191)

The Fractional Virial Potential Energy in Two-Component Systems [PDF]

open access: yesSerbian Astronomical Journal, 2008
Two-component systems are conceived as macrogases, and the related equation of state is expressed using the virial theorem for subsystems, under the restriction of homeoidally striated density profiles.
Caimmi, R., Valentinuzzi, T.
doaj   +3 more sources

Numerical Study of a Nonlocal Nonlinear Schrödinger Equation (MMT Model)

open access: yesStudies in Applied Mathematics, Volume 156, Issue 3, March 2026.
ABSTRACT In this paper, we study a nonlocal nonlinear Schrödinger equation (MMT model). We investigate the effect of the nonlocal operator appearing in the nonlinearity on the long‐term behavior of solutions, and we identify the conditions under which the solutions of the Cauchy problem associated with this equation are bounded globally in time in the ...
Amin Esfahani, Gulcin M. Muslu
wiley   +1 more source

Understanding Electronic Structure and Chemical Reactivity: Quantum-Information Perspective

open access: yesApplied Sciences, 2019
Several applications of quantum mechanics and information theory to chemical reactivity problems are presented with emphasis on equivalence of variational principles for the constrained minima of the system electronic energy and its kinetic energy ...
Roman F. Nalewajski
doaj   +1 more source

The introduction of baryon string in the model of spiral galaxies structure [PDF]

open access: yesКомпьютерные исследования и моделирование, 2012
It proposes a new alternative approach to explain the flat spectrum of the velocity for stars orbital motion on the periphery of spiral galaxies. In particular, that velocity significant excess of speed calculated according to the virial theorem.
A. V. Koganov, Vladimir G. Krechet
doaj   +1 more source

Tomography of Collisionless Stellar Systems

open access: yes, 1994
In this paper the concept of tomography of a collisionless stellar system of general shape is introduced, and a generalization of the Projected Virial Theorem is obtained. Applying the tomographic procedure we then derive a new family of virial equations
I. S. Gradshteyn   +7 more
core   +1 more source

Exploring Routes to Calculating the Effective Magnetic Permeability of Polymer Magnetic Composites

open access: yesPolymer Composites, Volume 47, Issue 2, Page 981-988, 20 January 2026.
Schematic of a static (undeformed) configuration of the magnetic‐filled polymer network for a semi‐crystalline sample. ABSTRACT Our understanding of the effective magnetic permeability of composite materials composed of randomly dispersed metallic ferromagnetic particles within a nonmagnetic (polymer) matrix must respond to several challenges.
Christian Brosseau
wiley   +1 more source

Dynamical Classification of Galactic Open Clusters Using Virial Theorem

open access: yesUniverse
Open clusters are important tracers for studying the structure and evolution of the Milky Way, but determining their dynamical states and gravitational binding properties remains a complex task. In this study, we systematically analysed the gravitational
Chaolin Yu   +3 more
doaj   +1 more source

Stability of Gas Clouds in Galactic Nuclei: An Extended Virial Theorem

open access: yes, 2015
Cold gas entering the central $1$ to $10^2$ pc of a galaxy fragments and condenses into clouds. The stability of the clouds determines whether they will be turned into stars or can be delivered to the central supermassive black hole (SMBH) to turn on an ...
Amaro-Seoane, Pau   +2 more
core   +1 more source

Atomistic simulations of water‐driven structural and mechanical changes in N–A–S–H gels

open access: yesJournal of the American Ceramic Society, Volume 108, Issue 12, December 2025.
Abstract This study employs molecular dynamics simulations to investigate the effect of varying water content (0–25 wt.%) and Si/Al ratio (1–3) on the atomistic structure and elastic properties of sodium aluminosilicate hydrates (N–A–S–H) gels. Results show that water molecules break the aluminosilicate framework by forming hydroxyl groups on AlO4 and ...
Eashow Shamo   +4 more
wiley   +1 more source

The virial theorem in Eddington-Born-Infeld gravity

open access: yes, 2015
We consider the possibility that the Eddington-Born-Infeld (EBI) modified gravity provides an alternative explanation for the mass discrepancy in clusters of galaxies.
Santos, Janilo, Santos, Noelia S.
core   +1 more source

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